Cisco 400-007 Exam With Confidence Using Practice Dumps

The performance degradation is caused by output queue drops on the 1 Gbps server port. Increasing the queue size allows more data to be buffered during transient congestion periods, preventing packet loss and retransmissions which significantly degrade iSCSI performance.

iSCSI is sensitive to packet loss due to its reliance on TCP.

Increasing the queue depth is a simple, cost-effective method to absorb bursts.

Changing to CIFS (A) is irrelevant since CIFS would suffer similar TCP congestion.

WRED (C) intentionally drops packets during congestion, which is undesirable here.

Enabling TCP Nagle (D) would likely introduce latency and reduce throughput for large data transfers.

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In Cisco Wireless Guest Anchor deployments, traffic between foreign and anchor controllers is typically tunneled using CAPWAP (Control and Provisioning of Wireless Access Points).

The CAPWAP tunnel operates over IP and can traverse MPLS VPN or VRF-Lite Layer 3 segmentation to maintain logical separation across different segments or geographic sites.

This allows end-to-end isolation of guest traffic from the enterprise network into the DMZ anchor location, as shown in the diagram.

Why other options are incorrect:

B: Unencapsulated traffic would expose guest traffic inside the enterprise network.

C: EoIP is not a standard Cisco wireless tunneling method.

D: IPinIP or IPsec tunnels are not typically used between WLCs for guest anchor tunneling.

B (Encrypt data when it is at rest and in motion): In hybrid cloud deployments, encryption is one of the most critical mechanisms to protect sensitive enterprise data both during storage (at rest) and while being transmitted (in motion). This ensures confidentiality and integrity across both private and public cloud environments.

Other options explained:

A: Using standard protocols is a general best practice but insufficient without encryption.

C: Communication of risks is part of compliance but does not enforce technical security.

D: Using standard protocols without encryption exposes data to risks.

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